I never said so.
Yes, you keep lumping input devices and hardware together and that is your problem. Exactly.

Yeah, keep telling yourself that.
If there was a definition for the word "predictable" in the dictionary, your name would be on it.

There's a reason why Crysis is taking a step back and fixing their earlier mistake of not making Crysis multiplat from the beginning. At least they learned their lesson in time for Crysis 2.

I can name another game too. The Witcher 2 (although that one is going multiplat as well later- shocking). Still, you need to name quite a few games to prove that most PC only games do indeed make use of PC hardware most of the time.

The witcher 2 and Crysis are a good start. And that's where it ends (unless you want to name another.. few dozen games. And you'd still be wrong).

It's not always a good investment to aim for the whole market.
It's pretty much the only genre that is incompatible. Likewise seeing a fighting game on a PC is quite a rare sight. Most fare well on any platform with any input device.